Bella might become more rebellious at first. The idea of being forced into a marriage goes against her independent spirit. So she could start to act out, be more outspoken, and challenge the authority that is forcing her into this situation.
As the story progresses, she could also become more cautious and calculating. Since she's in a difficult situation, she has to think carefully about her every move. This might make her seem more mature and less impulsive compared to her original character. For example, she might be more careful about how she interacts with Edward, trying to figure out his motives while also looking for a way out.
If she starts to have some sort of feelings for Edward during the forced marriage, her character could become more empathetic towards him. She might start to see things from his perspective, which could soften her edges. This would be a significant change from her initial state of being forced into something she didn't want, as she now has to balance her new - found feelings with her desire for freedom.
Their relationship would become more complex. They would now have a shared responsibility for the baby. There might be some disagreements on how to raise the child, especially considering the baby's unique nature. For example, Edward might be more cautious due to his long - lived vampire experience, while Bella might want the baby to have a more 'human' upbringing.
Their relationship would likely become more intense. They would have a new bond through the baby. Edward would be even more protective of Bella, not just because he loves her, but also because she's carrying their child.
She could try to reason with her parents. She could tell them that she doesn't love Edward and that forcing her into this marriage will only make everyone unhappy. She could also point out the modern values of freedom in choosing a life partner.
Bella may become a more adventurous character. Maybe she decides to try new things that she was always too afraid to do before because Edward was so overprotective. She could start going to parties, trying extreme sports, or exploring new hobbies. This new adventurous side of her would make her a more well - rounded character, and when Edward returns, he would see a completely different Bella.
One possible plot development could be Bella trying to find a way to escape the forced marriage. Maybe she discovers some hidden secrets about Edward or the circumstances that led to the forced union, which gives her leverage to break free.
For Edward, he'd be a lot more serious. He has to think about providing for Bella and the baby. His carefree vampire side might take a backseat. Bella would change in that she'd be more in tune with her maternal instincts. She'd be more cautious and perhaps a bit more secretive about her pregnancy in the beginning to avoid unwanted attention. And as the pregnancy progresses, she'd become more dependent on Edward for physical and emotional support.
Sometimes in fanfiction, Bella might be more assertive when they meet. Instead of being the shy girl, she could be the one to initiate the conversation. This change in her personality can lead to a different dynamic in their relationship from the start.
Well, in many Twilight fanfics, if Edward leaves Bella, she often goes through a deep emotional turmoil. She might become very sad at first, feeling a sense of abandonment. She could also be angry, feeling betrayed by Edward. And she might become more withdrawn, isolating herself from her friends and family as she tries to deal with the pain of his departure.
Well, it becomes more platonic. There's no romantic tension between them like in the original. Instead, there could be a sense of loyalty and family - based love.
In this fanfiction, the relationship between Bella and Edward is turned on its head. Bella's role is now to shape Edward's character from a young age. Their interactions will be less about the intense passion of the original story and more about the tender, sometimes difficult, bond between a mother and son. She might worry about his future, his choices, and his safety in a way that is very different from the love - based concerns in the original narrative.